| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.io.input; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.fail; |
| import static org.mockito.Mockito.mock; |
| import static org.mockito.Mockito.never; |
| import static org.mockito.Mockito.times; |
| import static org.mockito.Mockito.verify; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.io.StringReader; |
| import java.io.StringWriter; |
| import java.io.Writer; |
| import java.nio.CharBuffer; |
| |
| import org.apache.commons.io.output.StringBuilderWriter; |
| import org.apache.commons.io.test.ThrowOnCloseReader; |
| import org.apache.commons.io.test.ThrowOnCloseWriter; |
| import org.junit.jupiter.api.BeforeEach; |
| import org.junit.jupiter.api.Test; |
| |
| /** |
| * JUnit Test Case for {@link TeeReader}. |
| */ |
| public class TeeReaderTest { |
| |
| private StringBuilderWriter output; |
| |
| private Reader tee; |
| |
| @BeforeEach |
| public void setUp() { |
| final Reader input = new CharSequenceReader("abc"); |
| output = new StringBuilderWriter(); |
| tee = new TeeReader(input, output); |
| } |
| |
| /** |
| * Tests that the main {@code Reader} is closed when closing the branch {@code Writer} throws an |
| * exception on {@link TeeReader#close()}, if specified to do so. |
| */ |
| @Test |
| public void testCloseBranchIOException() throws Exception { |
| final StringReader goodR = mock(StringReader.class); |
| final Writer badW = new ThrowOnCloseWriter(); |
| |
| final TeeReader nonClosingTr = new TeeReader(goodR, badW, false); |
| nonClosingTr.close(); |
| verify(goodR).close(); |
| |
| final TeeReader closingTr = new TeeReader(goodR, badW, true); |
| try { |
| closingTr.close(); |
| fail("Expected " + IOException.class.getName()); |
| } catch (final IOException e) { |
| verify(goodR, times(2)).close(); |
| } |
| } |
| |
| /** |
| * Tests that the branch {@code Writer} is closed when closing the main {@code Reader} throws an |
| * exception on {@link TeeReader#close()}, if specified to do so. |
| */ |
| @Test |
| public void testCloseMainIOException() throws IOException { |
| final Reader badR = new ThrowOnCloseReader(); |
| final StringWriter goodW = mock(StringWriter.class); |
| |
| final TeeReader nonClosingTr = new TeeReader(badR, goodW, false); |
| try { |
| nonClosingTr.close(); |
| fail("Expected " + IOException.class.getName()); |
| } catch (final IOException e) { |
| verify(goodW, never()).close(); |
| } |
| |
| final TeeReader closingTr = new TeeReader(badR, goodW, true); |
| try { |
| closingTr.close(); |
| fail("Expected " + IOException.class.getName()); |
| } catch (final IOException e) { |
| //Assert.assertTrue(goodW.closed); |
| verify(goodW).close(); |
| } |
| } |
| |
| @Test |
| public void testMarkReset() throws Exception { |
| assertEquals('a', tee.read()); |
| tee.mark(1); |
| assertEquals('b', tee.read()); |
| tee.reset(); |
| assertEquals('b', tee.read()); |
| assertEquals('c', tee.read()); |
| assertEquals(-1, tee.read()); |
| assertEquals("abbc", output.toString()); |
| } |
| |
| @Test |
| public void testReadEverything() throws Exception { |
| assertEquals('a', tee.read()); |
| assertEquals('b', tee.read()); |
| assertEquals('c', tee.read()); |
| assertEquals(-1, tee.read()); |
| assertEquals("abc", output.toString()); |
| } |
| |
| @Test |
| public void testReadNothing() { |
| assertEquals("", output.toString()); |
| } |
| |
| @Test |
| public void testReadOneChar() throws Exception { |
| assertEquals('a', tee.read()); |
| assertEquals("a", output.toString()); |
| } |
| |
| @Test |
| public void testReadToArray() throws Exception { |
| final char[] buffer = new char[8]; |
| assertEquals(3, tee.read(buffer)); |
| assertEquals('a', buffer[0]); |
| assertEquals('b', buffer[1]); |
| assertEquals('c', buffer[2]); |
| assertEquals(-1, tee.read(buffer)); |
| assertEquals("abc", output.toString()); |
| } |
| |
| @Test |
| public void testReadToArrayWithOffset() throws Exception { |
| final char[] buffer = new char[8]; |
| assertEquals(3, tee.read(buffer, 4, 4)); |
| assertEquals('a', buffer[4]); |
| assertEquals('b', buffer[5]); |
| assertEquals('c', buffer[6]); |
| assertEquals(-1, tee.read(buffer, 4, 4)); |
| assertEquals("abc", output.toString()); |
| } |
| |
| @Test |
| public void testReadToCharBuffer() throws Exception { |
| final CharBuffer buffer = CharBuffer.allocate(8); |
| buffer.position(1); |
| assertEquals(3, tee.read(buffer)); |
| assertEquals(4, buffer.position()); |
| buffer.flip(); |
| buffer.position(1); |
| assertEquals('a', buffer.charAt(0)); |
| assertEquals('b', buffer.charAt(1)); |
| assertEquals('c', buffer.charAt(2)); |
| assertEquals(-1, tee.read(buffer)); |
| assertEquals("abc", output.toString()); |
| } |
| |
| @Test |
| public void testSkip() throws Exception { |
| assertEquals('a', tee.read()); |
| assertEquals(1, tee.skip(1)); |
| assertEquals('c', tee.read()); |
| assertEquals(-1, tee.read()); |
| assertEquals("ac", output.toString()); |
| } |
| |
| } |